If you've noticed that they can't maintain eye contact with you, spread nasty rumors about you, or stop smiling the minute you enter the room, you may want to evaluate whether you're doing something wrong.
Of course, sometimes personalities simply clash and it's nobody's fault. But if more than one coworker seems to dislike you, you should take a good look in the mirror and do everything you can to turn the situation around.
"It's important for your colleagues to like you, as you will be more effective in your job and get more accomplished if you have strong relationships," says Lynn Taylor, a national workplace expert and the author of "Tame Your Terrible Office Tyrant: How to Manage Childish Boss Behavior and Thrive in Your Job." "You'll be better able to focus, more creative, and deliver your best results."
In contrast, she explains, "petty politics and negativity will drain you and your ability to advance in your job."
But while it's important to make an effort with your colleagues - especially those who aren't particularly fond of you - "this doesn't mean you have to be a doormat, and in the process lose respect for yourself," says Michael Kerr, an international business speaker and author of "The Humor Advantage."
"Don't go overboard trying to get everyone's personal stamp of approval," Taylor adds. "The workplace is made up of diverse personalities, and sometimes you just have to accept that not everyone loves you."
If you're fairly certain your coworkers hate you, here's what you can do: